Ladder attachment.



C E DAVIDSON LADDER ATTACHMENT. APPLIOATION FILED snp'r. 21, 190s.

Patented Mar. 30, 1909.

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in a vertical series one above the other. 'upper and lower edges of each door opening,

CHARLES E. DAVIDSON, OF GREENVILLE, ILLINOIS.

LADDER ATTACHMENT.

Specification of Letters Patent.

Patented March 80, 1909.

Application filed September 21, 1908. Serial No. 453,921.

To all lwhom it may concern:

Beit known that I, OHARLEs E. DAVIDSON, a vcitizen of the United States, residing at Greenville, in the county or' Bond and State oi Illinois, have invented a new and uselul Ladder Attachment, of which the 'following is a specilication.

This invention relates to silo construction,

the'priniary` object of the invention being to provide a means whereby access may be readily had to any of the doors of the silo, there being a plurality of such doors arranged one above the other, as is usual.

More specifically, the invention resides in the provision of a silo construction including a ladder structure, this structure having its rungs or iootholds in the form oi" cleats secured upon the outer surface of the wall of the silo, and other cleats secured upon the doors of the silo, hand-rails or stiles being provided upon the wall of the silo, one to each side of the door openings therein. l

One of the objects of the invention is to provide, in a structure of this class, a ladder .evice com rised of the elements above mentioned, an( having its cleats, which are secured upon the wall oll the structure, arranged in such a manner as to brace the boards of which the said wall is com rised, above and below the door openings t erein, so that the structure will not be weakened by the provision of such door openings.

A further object of the invention is to provide beams on each side ci each door o ening in the silo wall which may be graspec by a person climbing into or out ofthe silo through the said'doors, such means not being ordinarily employed.

In the accompanying drawings :-l `igure l is a view in elevation of a portion of a silo structure rshowing' the application of my in- ,vention thereto 5 Figi) is a vertical sectional view therethrough, taken in a line midway of the hand-rails shown in Fig. l, and Fig. 3 is a detail horizontal sectional view on the line 3-3 of Fig. 1, showing` the manner oi securin the hand-rails in position.

du the drawings, the wall of the silo is indicated in general by the reference character A, it being made up of boards 5, arranged in they customary manner in building such structures. As shown in Figs. l and 2 of the drawings, these boards 5 are cut away at points to form door openings 6, extending The as clearly shown in Fig. 2 oll the drawings, are beveled as at 7, as are the corresponding edges of the doors vfor closing said openings, said doors being indicated by the numeral 8, and being comprised, as in the case ol' the wall A ol'l the structure, el a plurality oll boards, placed edge to edge, the boards being securely braced in this relation by means ol' cleats 9, which are secured by means olI bolts or other suitable securing devices, thereto, and extend transversely ol the said doors, and in parallel relation, there being preferably two such cleats provided upon each door. As will be readily understood, these doors S are iitted into the door openings (i from the inside ol' the silo, and are held in place by the fodder within the silo. As will be presently pointed out, these cleats 9 constitute the rungs or loot-holds ol' the ladder structure of the silo, and other rungs or lootholds are provided, in the iorm ol cleats 10, which are secured directly upon the wall oll the silo, at points between the door openings 6 in the said wall. Ol'l the last mentioned cleats l0, there are preferably two between each pair ol door openings 6, and the ends olI the said cleats 10 extend beyond the vertical planes occupied by the vertical edges ol' the said door openings 6, so that the boards which surround the door openings and which are located therebetween, will be 4firmly braced, and weakening ol' the structure at points where the door openings are formed will be obviated.

As above stated, the cleats 10, as well as the cleats 9, allord loot-holds, and constitute, in effect, the rungs ol a ladder structure, and, in order that the said structure may be as like the form of a ladder as possible, all ol' the cleats above described are equi-distantly spaced, as is clearly shown in Figs. l and 2 ol' the drawings.

rl`he ladder structure is completed by stiles or hand rails l1, arranged one to each side o` the door openings 6 in the wall oll the silo. These hand-rails 1l are secured by means ol' bolts 12, in seats 13, which are 'formed in the outer faces oll the cleats 10 adjacent the ends thereof, the hand-rails being cylindrical in form, and the seats 13 being formed to partly embrace said hand-rails, the bolts l2 being passed through the said hand-rails, the cleats 10, and the wall 5 of the structure.

From the foregoing description oi' my invention, it will be seen that I have provided a silo construction in which the wall is provided with a plurality of door openings, arranged in a vertical series, one above the other, the wall adjacent the door openings being braced by transverse cleats which ai'- l'ord foot-holds together with the cleats upon the doors Which are fitted in the door openings, and which are niade up of boards placed edge to edge and held in this relation by ineans of the said transverse cleats which also afford foot-holds, and hand-rails which are secured to the iirst mentioned cleats, one to each side of the said door openings. In other words, the several cleats serve not only to brace the Wall and doors of the silo, but also to ailord foot-holds, and constitute, in eect, the rungs of a ladder structure, said structure being completed by the hand-rails 1 l. it will also be understood from the foregoing description of my invention that a person climbing in or out of the silo through any one of the several door openings therein, may grasp either one of the hand-rails oi' the ladder construction and hold tightly to the saine until after the foot has been properly disposed on one of the rungs of the said ladder construction.

Having described niy invention, what l claini as new, and desire to secure, by LettersPatent, is

l. A structure of the class described, provided in its wall with door openings, doors litted in the openings, cleats secured upon the doors, cleats secured upon the wall of the structure at points between the door open ings, and hand rails arranged one to each side of the said door openings, the hand rails constituting the stiles, and the cleats upon the doors and upon the walls, constituting the rungs of a ladder structure.

2. A structure oi the class described provided in its wall with door openings, doors fitted in the openings, cleats secured upon the doors, cleats secured upon the Wall of the structure at points between the door openings, and hand rails mounted upon the said wall of the structure, one to each side of the said door opening, the hand rails constituting the stiles, and the cleats upon the doors and upon the walls, constituting the rungs of a ladder structure.

3. A structure of the class described provided in its Wall With door openings, doors fitted in the openings, cleats secured upon the doors, cleats secured upon the Wall of the structure at points between the door openings, the last mentioned cleats extending at their ends past the vertical planes occupied by the vertical edges of the door openings,

and hand rails secured to the last mentioned cleats, one to each side oi" the said door openings, the hand rails constituting the stiles, and the cleats upon the doors and upon the walls, constituting the rungs of a ladder structure.

4. A structure of the class described, provided in its wall with door openings, doors iitted in the openings, cleats secured upon the doors, cleats secured upon the Wall of the structure at points between the door openings, the last mentioned cleats extending at their ends beyond the vertical planes occupied by the vertical edges of thedoor openings, and being forrned adjacent their ends with seats, and hand rails secured to the last mentioned cleats, one to each side of the said door openings and in the seats in said cleats, the hand rails' constituting the stiles, and the cleats upon the doors and upon l the walls, constituting the rungs of a ladder structure.

5. A structure of the class described, provided in its wall with door openings, doors iitted in the openings, cleats secured upon the doors, cleats secured upon the wall of the structure at points between the door openings, and hand rails securedupon the wall of the structure., one at each side oi' the door openings therein, all oi said cleats being equidistantly spaced, the .hand rails constituting the s'tiles, and the cleats upon the doors and upon the walls, constituting the rungs of a ladder structure.

6. A structure of the class described provided in its wall with door openings, doors tted in the openings, cleats secured upon the doors, cleats secured upon the wall of the structure at points between'the door openings, and spaced apart a distance equal to the distance between the cleats upon the doors, the last mentioned cleats extending at their ends beyond the vertical planes occupied by the vertical edges of the door openings, and handrails secured to the said cleats upon the wall of the structure, and spaced by said cleats from the said wall, the hand rails constituting the stiles, and the cleats upon the doors and upon the Walls, constituting the rungs of a ladder structure.

ln testimony that l clairn the foregoing as iny own, l have hereto ai'lixed my signatur in the presence of two witnesses.

FRANK STEWART, /VALTER KINGEN. 

